Question Redundancies

[halocline]

If SPG's were so unreliable then tech divers doing 300 + ft dives would have sworn them off years ago, but they haven't. But if they were given a choice of using a transmitter/computer or a simple glass and brass SPG for tank pressure, my guess is that they will pick the SPG.
Hey, why don't we find out?

I have always used only spg for tech and cave dives, but that’s because I’m cheap. I would trust the shearwater transmitters as do most of my cave buddies. I wouldn’t bother with both. I have a decent idea of how much gas I have at any given time.

Isn’t this thread about a new diver, doing simple recreational OW dives? Redundancy is just not that important, as made clear by the fact that 99% of OW divers don’t bother with redundant gas monitoring and yet, somehow, they’re still alive.

 

[bradlw]

I have always used only spg for tech and cave dives, but that’s because I’m cheap.

I've only ever used and SPG....also because I'm cheap.
I do find the idea of an air integrated computer fun, because of all the breathing rate data it could give me and that appeals to teh nerd in me...
If I ever do get one, I'm 99.9% sure that I'll back it up with an SPG too. Maybe not if I'm only doing super shallow easy dives, but otherwise....